I would think the same thing looking at Napoleonic era military uniforms and yet hundreds of thousands of people wore them for a couple of decades.
Sometimes uniform decisions are silly. In the early 2000's someone high up in the US Coast Guard decided that they wanted coasties to look more tactical so gone went blue dickies and the light blue shirt, and in came the BDU, in dark navy blue, renamed the ODU. Even Auxiliarists had to wear the damned things. On a small cramped boat in summer they were horrible, worse Coast Guard pre-determined, rightly, that the outer jacket could snag on machinery, boat parts etc, and so jacket that was designed for the army to be worn outside had to be tucked in at all times. But it looked good.
I'm going to give the Monster Maroons, which i think look great, a pass on comfort, as we don't know what fabric would exist in the future, or how they would fit. They could feel great.
I will point out the cognitive dissonance, when I see it, of anyone who says something negative about Star Trek catsuits but upholds the TMP uniform.